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Office Closing and Exit Activities (Tables)
6 Months Ended
Jun. 30, 2011
Office Closing and Exit Activities [Abstract]  
Exit activities included in accrued liabilities in consolidated balance sheet
                 
    Six Months     Year  
    Ended     Ended  
    June 30,     December 31,  
    2011     2010  
    (in thousands)  
Balance at beginning of period
  $ 1,092     $ 1,568  
Accrued one-time termination costs
          5,138  
Office lease
    (117 )     514  
Payments
    (742 )     (6,128 )
 
           
Balance at end of period
  $ 233     $ 1,092